To be honest I don't feel like my example hand is a particularly good 4H bid, just that to me, that is somewhere around my "line in the sand". Passing with 16(42) is ridiculous to me. A good rule of thumb is that if you can make game opposite a reasonably fitting weak NT, then you should bid. Hands like Jxx xx AQxx KQxx are just so normal, yet 4H is a great contract, and even when 4H is down, it usually means 3S was making. Tthey will take insurance really often in 4S also (maybe too often), which is fine with us, since my partner's cards are over theirs. The downside of course is that after 3S 4H 4S, partner will be doubling quite a bit too often, and if he is stretching for 5H, it's probably wrong. Once in a blue moon we will have to eat 4SXX. I can live with all this in exchange for getting to a making game opposite a random 12 count that would not even consider balancing.